Refactor: Renaming ssl_cert_chain to GetSSLCertificateChain()

Underscore methods in the middle of classes is against the chromium style guide
this change is part of a long series of changes to refactor crypto code in
WebRTC to conform to the chromium standard better.

1. ssl_cert() -> GetSSLCertificate()
2. ssl_cert_chain() -> GetSSLCertificateChain()
3. Small tidying up in rtccertificategenerator.cc

Bug: webrtc:9860
Change-Id: I670f76e31d6d4f873034edb72d958b3c227379cb
Reviewed-on: https://webrtc-review.googlesource.com/c/107802
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Benjamin Wright <benwright@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25371}
diff --git a/pc/jseptransport_unittest.cc b/pc/jseptransport_unittest.cc
index 748a4e0..b8265de 100644
--- a/pc/jseptransport_unittest.cc
+++ b/pc/jseptransport_unittest.cc
@@ -383,7 +383,7 @@
     ASSERT_NE(nullptr, certificate);
 
     std::string digest_algorithm;
-    ASSERT_TRUE(certificate->ssl_certificate().GetSignatureDigestAlgorithm(
+    ASSERT_TRUE(certificate->GetSSLCertificate().GetSignatureDigestAlgorithm(
         &digest_algorithm));
     ASSERT_FALSE(digest_algorithm.empty());
     std::unique_ptr<rtc::SSLFingerprint> good_fingerprint =
diff --git a/pc/peerconnection_integrationtest.cc b/pc/peerconnection_integrationtest.cc
index b645ab1..236a8bb 100644
--- a/pc/peerconnection_integrationtest.cc
+++ b/pc/peerconnection_integrationtest.cc
@@ -1821,26 +1821,26 @@
 
   auto caller_remote_cert = GetRemoteAudioSSLCertificate(caller());
   ASSERT_TRUE(caller_remote_cert);
-  EXPECT_EQ(callee_cert->ssl_certificate().ToPEMString(),
+  EXPECT_EQ(callee_cert->GetSSLCertificate().ToPEMString(),
             caller_remote_cert->ToPEMString());
 
   auto callee_remote_cert = GetRemoteAudioSSLCertificate(callee());
   ASSERT_TRUE(callee_remote_cert);
-  EXPECT_EQ(caller_cert->ssl_certificate().ToPEMString(),
+  EXPECT_EQ(caller_cert->GetSSLCertificate().ToPEMString(),
             callee_remote_cert->ToPEMString());
 
   auto caller_remote_cert_chain = GetRemoteAudioSSLCertChain(caller());
   ASSERT_TRUE(caller_remote_cert_chain);
   ASSERT_EQ(1U, caller_remote_cert_chain->GetSize());
   auto remote_cert = &caller_remote_cert_chain->Get(0);
-  EXPECT_EQ(callee_cert->ssl_certificate().ToPEMString(),
+  EXPECT_EQ(callee_cert->GetSSLCertificate().ToPEMString(),
             remote_cert->ToPEMString());
 
   auto callee_remote_cert_chain = GetRemoteAudioSSLCertChain(callee());
   ASSERT_TRUE(callee_remote_cert_chain);
   ASSERT_EQ(1U, callee_remote_cert_chain->GetSize());
   remote_cert = &callee_remote_cert_chain->Get(0);
-  EXPECT_EQ(caller_cert->ssl_certificate().ToPEMString(),
+  EXPECT_EQ(caller_cert->GetSSLCertificate().ToPEMString(),
             remote_cert->ToPEMString());
 }
 
diff --git a/pc/rtcstatscollector.cc b/pc/rtcstatscollector.cc
index d883943..32e0b65 100644
--- a/pc/rtcstatscollector.cc
+++ b/pc/rtcstatscollector.cc
@@ -1388,7 +1388,7 @@
     rtc::scoped_refptr<rtc::RTCCertificate> local_certificate;
     if (pc_->GetLocalCertificate(transport_name, &local_certificate)) {
       certificate_stats_pair.local =
-          local_certificate->ssl_cert_chain().GetStats();
+          local_certificate->GetSSLCertificateChain().GetStats();
     }
 
     std::unique_ptr<rtc::SSLCertChain> remote_cert_chain =
diff --git a/pc/rtcstatscollector_unittest.cc b/pc/rtcstatscollector_unittest.cc
index 1a03e98..3fc0127 100644
--- a/pc/rtcstatscollector_unittest.cc
+++ b/pc/rtcstatscollector_unittest.cc
@@ -143,7 +143,7 @@
   }
   // Fingerprints for the whole certificate chain, starting with leaf
   // certificate.
-  const rtc::SSLCertChain& chain = info->certificate->ssl_cert_chain();
+  const rtc::SSLCertChain& chain = info->certificate->GetSSLCertificateChain();
   std::unique_ptr<rtc::SSLFingerprint> fp;
   for (size_t i = 0; i < chain.GetSize(); i++) {
     fp = rtc::SSLFingerprint::Create("sha-1", chain.Get(i));
@@ -703,7 +703,8 @@
       CreateFakeCertificateAndInfoFromDers(
           std::vector<std::string>({"(remote) single certificate"}));
   pc_->SetRemoteCertChain(
-      kTransportName, remote_certinfo->certificate->ssl_cert_chain().Clone());
+      kTransportName,
+      remote_certinfo->certificate->GetSSLCertificateChain().Clone());
 
   rtc::scoped_refptr<const RTCStatsReport> report = stats_->GetStatsReport();
 
@@ -817,7 +818,7 @@
           std::vector<std::string>({"(remote) audio"}));
   pc_->SetRemoteCertChain(
       kAudioTransport,
-      audio_remote_certinfo->certificate->ssl_cert_chain().Clone());
+      audio_remote_certinfo->certificate->GetSSLCertificateChain().Clone());
 
   pc_->AddVideoChannel("video", kVideoTransport);
   std::unique_ptr<CertificateInfo> video_local_certinfo =
@@ -829,7 +830,7 @@
           std::vector<std::string>({"(remote) video"}));
   pc_->SetRemoteCertChain(
       kVideoTransport,
-      video_remote_certinfo->certificate->ssl_cert_chain().Clone());
+      video_remote_certinfo->certificate->GetSSLCertificateChain().Clone());
 
   rtc::scoped_refptr<const RTCStatsReport> report = stats_->GetStatsReport();
   ExpectReportContainsCertificateInfo(report, *audio_local_certinfo);
@@ -853,7 +854,8 @@
                                             "(remote) another",
                                             "(remote) chain"});
   pc_->SetRemoteCertChain(
-      kTransportName, remote_certinfo->certificate->ssl_cert_chain().Clone());
+      kTransportName,
+      remote_certinfo->certificate->GetSSLCertificateChain().Clone());
 
   rtc::scoped_refptr<const RTCStatsReport> report = stats_->GetStatsReport();
   ExpectReportContainsCertificateInfo(report, *local_certinfo);
@@ -1954,7 +1956,8 @@
       CreateFakeCertificateAndInfoFromDers(
           {"(remote) local", "(remote) chain"});
   pc_->SetRemoteCertChain(
-      kTransportName, remote_certinfo->certificate->ssl_cert_chain().Clone());
+      kTransportName,
+      remote_certinfo->certificate->GetSSLCertificateChain().Clone());
 
   report = stats_->GetFreshStatsReport();
 
diff --git a/pc/statscollector.cc b/pc/statscollector.cc
index 23a4493..a1d52db 100644
--- a/pc/statscollector.cc
+++ b/pc/statscollector.cc
@@ -783,8 +783,8 @@
     StatsReport::Id local_cert_report_id, remote_cert_report_id;
     rtc::scoped_refptr<rtc::RTCCertificate> certificate;
     if (pc_->GetLocalCertificate(transport_name, &certificate)) {
-      StatsReport* r =
-          AddCertificateReports(certificate->ssl_cert_chain().GetStats());
+      StatsReport* r = AddCertificateReports(
+          certificate->GetSSLCertificateChain().GetStats());
       if (r)
         local_cert_report_id = r->id();
     }